"Little Johnny and Teacher" joke

Little Johnny was sitting in class doing math problems when his teacher picked him to answer a question. "Johnny, if there were five
birds sitting on a fence and you shot one with your gun how many would be left?"

"None," replied Johnny, "cause the rest would fly away."

"Well the answer is four," said the teacher, "but I like the way you are thinking."

Little Johnny says, "I have a question for you now. If there were three women eating ice cream cones in a shop, one was licking her
cone, the second was biting the cone and the third was sucking the cone, which one is married?"

"Hmmm...," said the teacher nervously, "I guess the one sucking the cone?"

"No", said Little Johnny, "the one with the wedding ring on her finger, but I like the way you are thinking."